基于PSS/E的柔性直流输电系统自定义建模  

User-defined Modeling for Flexible High Voltage Direct Current Transmission Systems Based on PSS/E

作　　者：陈达[1] 王贝 Chen Da;Wang Bei(College of Electric Power, South China University of Technology, Guangzhou Guangdong 510640, China)

机构地区：[1]华南理工大学电力学院

出　　处：《电气自动化》2019年第4期46-49,共4页Electrical Automation

摘　　要：基于PSS/E的自定义环境对柔性直流输电系统的机电暂态建模展开了详细的研究。首先,深入研究了PSS/E自定义建模机理,从建模对象的视角分析,提出了具有普适性的标准化建模方法;其次,对柔性直流输电的机电暂态模型展开建模对象分析;然后,着重讨论了换流器与交流电网接口的建模以及交直流混合步长模拟等建模涉及到的关键性问题;最后,与PSCAD/EMTDC下的电磁暂态模型进行对比仿真测试,仿真结果验证了自定义模型的正确性和自定义功能的可靠性。基于PSS/E的柔性直流输电自定义模型可良好地再现控制特性,满足进一步深入仿真研究的需要,所提出的标准化建模方法可为其他复杂元件在PSS/E下的自定义建模提供指导依据。In this paper, a detailed study on electromechanical transient modeling was conducted for flexible high voltage direct current(HVDC) transmission systems on the basis of PSS/E user-defined environment. Firstly, the mechanism of PSS/E user-defined modeling was studied in depth, and a universal standardized modeling method was proposed from the point of view of the modeling object. Secondly, this paper analyzed the modeling object for the electromechanical transient model of flexible HVDC. Then, it focused on key issues relating to the modeling for the interface between converters and AC grid as well as modeling for mixed AC/DC step simulation. Finally, a comparative simulation test was conducted with respect to the electromagnetic transient model in PSCAD/EMTDC. Simulation results verified the correctness of the user-defined model and the reliability of the user-defined functions. The PSS/E-based user-defined model for flexible HVDC could achieve good representation of control characteristics and meet the requirement on further simulation study. The proposed standardized modeling method could provide guidance for user-defined modeling of other complex components in PSS/E.

关 键 词：柔性直流输电 PSS/E 自定义建模 标准化建模方法 机电暂态 

分 类 号：TM721[电气工程—电力系统及自动化]